摘要
选取经过降解处理的羧甲基淀粉醚(CMS-Na)代替部分异戊烯基聚氧乙烯醚(TPEG)制备一种新型聚羧酸系减水剂(PC2),利用水泥净浆单组分试验得出CMS-Na对TPEG的最佳替代量为15%。另外,用红外光谱(FTIR)对CMS-Na及聚羧酸减水剂的分子结构进行了表征。结果表明,掺加CMS-Na合成的PC2不仅降低了原材料的成本,而且具有良好的分散性和保塑性,同时不影响混凝土强度。
A new type of polycarboxylate superplasticizer(PC2)was synthesized by using the carboxymethyl starch ether(CMS-Na)to replace part of isopentenyl polyoxyethylene ether(TPEG).The best substitute of CMS-Na for TPEG was obtained by single component test of cement paste,which was 15%.In addition,the molecular structure of CMS-Na and polycarboxylate superplasticizer was characterized by infrared spectroscopy(FTIR).The results showed that PC2 not only reduced the cost of raw mate-rials,but also had excellent dispersion and plastic preservation abilities,while do no harm to the compressive strength of concrete.
作者
何廷树
杨仁和
徐一伦
李同新
房佳斌
HE Tingshu;YANG Renhe;XU Yilun;LI Tongxin;FANG Jiabin(College of Materials and Mineral Resources,Xi’an University of Architecture and Technology,Xi’an 710055;Shaanxi Youbang New Material Technology Co.Ltd.,Xi’an 712046)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2018年第4期646-649,共4页
Materials Reports
基金
陕西省工业攻关项目(2016GY-205)
关键词
聚羧酸减水剂
羧甲基淀粉醚
异戊烯基聚氧乙烯醚
替代量
混凝土
polycarboxylate superplasticizer
carboxymethyl starch ether
isopentenyl polyoxyethylene ether
substitution amount
concrete
